> ## Documentation Index > Fetch the complete documentation index at: https://docs.rails.wayex.com/llms.txt > Use this file to discover all available pages before exploring further. # Create a Treasury conversion quote > Creates an exact, short-lived quote to convert between AUD and an enabled stablecoin in this tenant account. ## What this endpoint does Creates an exact, short-lived quote to convert between AUD and an enabled stablecoin in this tenant account. ## When to use it Create it after the user chooses a direction and source amount, then display its all-in rate, fee, available source balance, source debit, destination amount, network, and expiry for review. The console stores the returned quote ID internally. ## Before you call Use a secret API key with `treasury:write`. The pair and settlement network must be enabled and the source amount must meet current limits. ## Money and balance effect Creating a quote does not reserve or move money. The source wallet is checked and reserved only when the quote is accepted. ## States and completion A quote is usable until its expiry. If it expires or no longer passes acceptance checks, create a fresh quote rather than altering it. ## Safe retries Send a unique `Idempotency-Key` for the logical action. If the response is lost, retry the same payload with the same key; never create a new key merely because the first response timed out. Read [Conversions and withdrawals](/treasury/conversions-and-withdrawals) for the complete workflow. ## OpenAPI ````yaml /api-reference/openapi.json post /v1/treasury/conversion-quotes openapi: 3.0.0 info: title: Wayex API description: >- Wayex APIs for direct customer payment routes and isolated, prefunded Treasury accounts. Each API key is bound to one tenant account and its own wallet, settings, webhooks, and reporting. version: 1.0.0 contact: {} servers: - url: https://api.sandbox.wayex.com description: Sandbox integration environment security: - Bearer: [] - ApiKey: [] tags: - name: Treasury description: >- Prefunded AUD and stablecoin wallets for one isolated tenant account. Fund, pay, convert, withdraw, track, and reconcile without selecting another account. - name: Customers description: >- Onboard end customers, run verification, and manage each customer's entitlements. - name: Payment routes description: >- Standing deposit instructions per customer. When a customer funds a route, Wayex auto-converts at the live rate and pays out/sends — no quote, no lock. - name: Transfers description: >- Read the conversion records produced when customers fund payment routes — the live activity feed and per-conversion lifecycle timeline. - name: Rates description: >- The live indicative AUD↔stablecoin rate right now — the all-in rate Wayex quotes. Indicative only; the binding price is struck when a route's funds land. - name: Revenue description: Your developer-fee revenue over time. - name: Invoices description: >- Your monthly invoices — Wayex platform fees due, net of your accrued developer-fee credit. - name: Webhooks description: Subscribe to HMAC-signed event webhooks and inspect deliveries. - name: API keys description: Create, list, and rotate API keys for programmatic access. - name: Fees description: >- Configure your developer fee — the markup withheld from each conversion and credited against your monthly invoice. - name: Invitations description: Accept a team invitation and activate your account. paths: /v1/treasury/conversion-quotes: post: tags: - Treasury summary: Create a Treasury conversion quote description: >- Creates an exact, short-lived quote to convert between AUD and an enabled stablecoin in this tenant account. Create it after the user chooses a direction and source amount, then display its all-in rate, fee, available source balance, source debit, destination amount, network, and expiry for review. The console stores the returned quote ID internally. operationId: TreasuryController2_createConversionQuote_v1 parameters: - name: Idempotency-Key in: header required: true description: >- A unique key for this logical action. Reuse the same key and identical payload when retrying after an unknown response. schema: type: string minLength: 8 maxLength: 255 example: 13bda8d7-87bd-4fa4-b7d5-e740725f9bd2 requestBody: required: true content: application/json: schema: type: object properties: sourceAsset: type: string enum: - AUD - USDC - USDT destinationAsset: type: string enum: - AUD - USDC - USDT settlementNetwork: type: string enum: - ethereum - base - arbitrum - optimism - polygon - bsc - avalanche - solana - tron sourceAmount: type: string pattern: ^\d+(\.\d+)?$ externalReference: type: string minLength: 1 required: - sourceAsset - destinationAsset - settlementNetwork - sourceAmount - externalReference responses: '201': description: '' content: application/json: schema: type: object properties: id: type: string minLength: 1 clientId: type: string minLength: 1 externalReference: type: string minLength: 1 source: type: object properties: amount: type: string pattern: ^\d+(\.\d+)?$ currency: type: string enum: - AUD - USDC - USDT network: type: string enum: - ethereum - base - arbitrum - optimism - polygon - bsc - avalanche - solana - tron required: - amount - currency destination: type: object properties: amount: type: string pattern: ^\d+(\.\d+)?$ currency: type: string enum: - AUD - USDC - USDT network: type: string enum: - ethereum - base - arbitrum - optimism - polygon - bsc - avalanche - solana - tron required: - amount - currency settlementNetwork: type: string enum: - ethereum - base - arbitrum - optimism - polygon - bsc - avalanche - solana - tron rate: type: string pattern: ^\d+(\.\d+)?$ fee: type: object properties: amount: type: string pattern: ^\d+(\.\d+)?$ currency: type: string enum: - AUD - USDC - USDT network: type: string enum: - ethereum - base - arbitrum - optimism - polygon - bsc - avalanche - solana - tron required: - amount - currency sourceDebit: type: object properties: amount: type: string pattern: ^\d+(\.\d+)?$ currency: type: string enum: - AUD - USDC - USDT network: type: string enum: - ethereum - base - arbitrum - optimism - polygon - bsc - avalanche - solana - tron required: - amount - currency configurationId: type: string minLength: 1 expiresAt: type: string format: date-time createdAt: type: string format: date-time required: - id - clientId - externalReference - source - destination - settlementNetwork - rate - fee - sourceDebit - configurationId - expiresAt - createdAt security: - Bearer: [] - ApiKey: [] components: securitySchemes: Bearer: type: http scheme: bearer bearerFormat: Wayex API key description: 'Send the same Wayex API key as `Authorization: Bearer `.' ApiKey: type: apiKey in: header name: X-Api-Key description: A Wayex API key. Use a secret key for write operations. ````